Gas Solenoid Valve Damping Chamber for Chattering Suppression
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Solution Overview
Problem
Gas solenoid valves experience chattering issues during gas tank filling, leading to noise, damage, and contamination due to wear and tear, which existing technologies fail to adequately address.
Innovation Solution
A gas solenoid valve design incorporating a damping chamber within the housing to dampen the main valve body's movement, utilizing a biasing member and electromagnetic drive device to minimize chattering, with a damping chamber formed in the plunger and gas introduced/discharged through a controlled gap to adjust damping force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gas pressure is used to lift the main valve body to open the channel, then the valve opens effectively for gas filling, but chattering occurs causing noise, damage, and contamination
Solution Approach 1:
A damping chamber is formed in the plunger to provide cushioning before the main valve body closes. This damping chamber absorbs the impact energy and reduces vibrations that cause chattering, thereby preventing noise, damage, and contamination while maintaining effective valve operation for gas filling
2Reliability
If a damping chamber is added to reduce valve body vibrations, then chattering is minimized, but the valve size increases
Solution Approach 1:
The damping chamber is merged with the plunger structure, forming the damping chamber directly within the plunger body. This integration allows the damping function to be incorporated without adding separate external components, thereby minimizing the increase in overall valve size while still providing effective vibration reduction
Solution Approach 2:
The plunger is designed to serve multiple functions: it acts as both the moving component that controls the valve and as the housing for the damping chamber. This multi-functionality eliminates the need for separate damping components, maintaining a compact valve design while providing effective chattering reduction
3Reliability
If gas flow through the gap is increased to adjust damping force, then damping effectiveness improves, but abrupt volume changes cause more vibrations
Solution Approach 1:
The damping force is adjusted by changing the gap width between the plunger and the damping chamber wall, rather than changing the gas flow rate. By making the gap narrower or wider, the damping characteristics can be optimized without causing abrupt volume changes that would induce vibrations and chattering
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively minimizes chattering at the main valve body, preventing damage and contamination while maintaining a compact valve size by using the spring housing chamber as the damping chamber, allowing for adjustable damping force.
Implementation Method 1
a biasing member that provides a biasing force to the main valve body to position the main valve body in the closed position
Implementation Method 2
an electromagnetic drive device that generates an excitation force to cause the main valve body to move to the open position, the excitation force opposing the biasing force of the biasing member
Implementation Method 3
A damping chamber is formed in the housing to damp movement of the main valve body
Data Source
AI summary
A gas solenoid valve includes: a housing including a first port, a second port, and a valve port leading to the first port and the second port; a main valve body capable of moving between a closed position thereof closing the valve port and an open position thereof opening the valve port and configured to move in an opening direction from the closed position to the open position by pressure of gas supplied through the first port; a biasing member that provides a biasing force acting in a closing direction to the main valve body to position the main valve body in the closed position; and an electromagnetic drive device that generates an excitation force opposing the biasing force of the biasing member to cause the main valve body to move to the open position. A damping chamber in the housing dampens movement of the main valve body.